| 氮磷钾分期施用对甘薯产量和品质的影响 |
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| 引用本文： | 王小晶 蔡国学 王,洋 吕慧峰 陈,怡 王正银.氮磷钾分期施用对甘薯产量和品质的影响[J].中国农学通报,2011,27(7):188-192. |
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| 作者姓名： | 王小晶 蔡国学 王 洋 吕慧峰 陈 怡 王正银 |
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| 作者单位： | 1. 西南大学资源环境学院,重庆,400716
2. 江津区农业委员会,重庆,402260 |
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| 摘 要： | 在重庆市江津区甘薯主产地蔡家镇鸳鸯村2社、石佛村3社两个试验点，采用田间试验研究了相同施肥量下甘薯不同生育期氮磷钾肥分配比例的产量和品质效应。结果表明，与常规施肥相比，以分期施氮钾、分期施氮磷钾各处理均提高甘薯块茎产量，鸳鸯村2社试验点的增幅为6.8%~29.5%，石佛村3社试验点的增幅为7.7%~46.6%，两个试验点均以分期施氮磷钾3处理增产作用最大。分期施肥各处理对甘薯维生素C含量的影响以增加为主，鸳鸯村2社试验点增加4.8%~29.9%，石佛村3社试验点增加0.7%~7.3%。各处理对甘薯块茎淀粉和全钾含量以降低为主，鸳鸯村2社试验点的降幅分别为2.4%~5.5%和12.3%~69.5%；石佛村3社试验点的降幅分别为2.4%~17.4%和0.9%~22.8%。分期施肥对甘薯可溶性糖、全磷和粗蛋白含量的影响，两个试验点结果表现不一致。从总体上看，对甘薯进行分期施肥能明显提高薯块产量和改善部分营养品质。
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| 关 键 词： | 龙眼 雌花数 雌花坐果率 温度 降雨量 龙眼 雌花数 雌花坐果率 温度 降雨量 |
| 收稿时间： | 8/3/2010 12:00:00 AM |
| 修稿时间： | 2010/8/30 0:00:00 |
Effects of Nitrogen, Phosphorus and Potassium Application by Stages on Yield and Quality of sweetpotato |
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| Wang Xiaojing,Cai Guoxue,Wang Yang,Lv Huifeng,Chen Yi,Wang Zhengyin.Effects of Nitrogen, Phosphorus and Potassium Application by Stages on Yield and Quality of sweetpotato[J].Chinese Agricultural Science Bulletin,2011,27(7):188-192. |
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| Authors: | Wang Xiaojing Cai Guoxue Wang Yang Lv Huifeng Chen Yi Wang Zhengyin |
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| Institution: | Wang Xiaojing 1,Cai Guoxue 2,Wang Yang 2,Lv Huifeng 1,Chen Yi 1,Wang Zhengyin 1 (1 College of Resources and Environmental Sciences,Southwest University,Chongqing 400716,2 District Agricultural Committee of Jiangjin,Chongqing 402260) |
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| Abstract: | On the basis of the same level fertilizer application,field experiments were conducted to study the effects of nitrogen,phosphorus and potassium by stages on yield and quality of sweetpotato in the town of Yuanyang village community Caijia 2 and the town of Shifou village community Caijia 3 of Jiangjin in Chongqing.The results showed that compared with conventional fertilization,application of nitrogen and potassium as well as nitrogen,phosphorus and potassium fertilizer by stages were effective to improve ... |
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| Keywords: | fertilization by stages sweetpotato yield quality |
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